When looking for the FSA2567UMX from Fairchild/ON Semiconductor, you may see a similar part number – FSA2567UMX-F135. What does this “-F135” suffix at the end of the part number indicate?
ON Semi has confirmed that there is no difference between these two part numbers. ON Semiconductor acquired Fairchild Semiconductor on September 19th, 2016. The FSA2567UMX-F135 is a former Fairchild part and Fairchild used this -F135 suffix as an internal description for enhanced EMI option for this part. The FSA2567UMX and FSA2567UMX-F135 can be used interchangeably.
Please note that the FSA2567UMX-F135 is obsolete. The FSA2567UMX is active and recommended for new designs.
Applicable part numbers
FSA2567UMX
FSA2567UMX-F135
FSA2567UMXTR-ND,FSA2567UMXCT-ND,FSA2567UMXDKR-ND
FSA2567UMX-F135TR-ND,FSA2567UMX-F135CT-ND,FSA2567UMX-F135DKR-ND